torus

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English[edit]

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A geometrical torus

Etymology[edit]

From Latin torus (swelling, protuberance).

Pronunciation[edit]

Noun[edit]

torus (plural tori or toruses)

  1. (topology) A topological space which is a product of two circles.
    A 4-variable Karnaugh map can be thought of, topologically, as being a torus.
  2. (mathematics) The standard representation of such a space in 3-dimensional Euclidean space: a shape consisting of a ring with a circular cross-section: the shape of an inner tube or hollow doughnut.
  3. (topology, in combination, n-torus, 4-torus, etc.) The product of the specified number of circles.
  4. (architecture) A molding which projects at the base of a column and above the plinth.
  5. (botany) The end of the peduncle or flower stalk to which the floral parts (or in the Asteraceae, the florets of a flower head) are attached; see receptacle.

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Translations[edit]

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Finnish[edit]

Verb[edit]

torus

  1. Second-person singular imperative present form of torua + the suffix -s.

Anagrams[edit]


Latin[edit]

Etymology[edit]

From Proto-Indo-European *sterh₃-.

Alternative forms[edit]

Pronunciation[edit]

Noun[edit]

torus m (genitive torī); second declension

  1. a swelling, protuberance, bulge, knot
  2. the muscular part of an animal
  3. raised ornament on a garland
  4. bolster, cushion
  5. (by extension) bed, couch
  6. embankment, an elevation of earth
  7. (architecture) large round molding at the base of a column

Inflection[edit]

Second declension.

Number Singular Plural
nominative torus torī
genitive torī torōrum
dative torō torīs
accusative torum torōs
ablative torō torīs
vocative tore torī

Derived terms[edit]

Descendants[edit]

References[edit]

  • torus in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879

Swedish[edit]

Noun[edit]

torus c

  1. (topology) torus; a shape consisting of a ring, or an object of the same topology residing in a space of higher dimension; especially considered as a Cartesian product of two circles in a four-dimensional space

Declension[edit]

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